What are some alternatives?
When comparing ipgeolocation.io and BigDataCloud.com, you can also consider the following products
IP-API.com - Free IP Geolocation API - lookup any IP address
IP2Location - IP2Location is a leading provider of IP intelligence service.
ipstack - ipstack is a free, real-time IP address to location JSON API and database service supporting IPv4 and IPv6 lookup.
Geo IP Tool - Find a geolocation of an IP address including latitude, longitude, city, region and country.
ipapi - Web analytics with IP address lookup and location API
ipdata.co - Get the Geolocation, Organisation, Currency, Timezone, Calling Code, Flag, Proxy, Tor and Threat intelligence data from any IPv4 or IPv6 address.